Two smooth tracks connect the same initial point P and final point Q
PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
Two smooth tracks connect the same initial point P and final point Q, which are at the same vertical height above the floor. Track X slopes directly from P down to Q. Track Y first dips to a point lower than Q before rising up to Q. A small block starts from rest at P and slides without friction along each track in separate trials. Compare the block’s speed upon reaching Q for the two tracks and justify your answer.